Abstract

We analyzed images obtained during Galileo flyby in 1992 and by the Clementine orbiter in 1994 to derive Digital Terrain Models (DTM) of selected large lunar impact basins, in particular, the Humboldtianum basin, Mare Crisium, and parts of Mare Orientale. The Humboldtianum terrain model has a lateral resolution of 2 km/pixel and a height resolution of 500 m. In the Orientale are we processed stereo images along a narrow strip cross-cutting the Rook and Cordillera Rings of the basin, and derived a terrain model with grid spacing of 200 m/ pixel and height resolution of 50 m. The new topographic data exceed the Clementine laser altimeter data in terms of resolution andnoise level and will allow us to carry out morphological studies of the lunar impacat basins in unprecedented detail.